/* shell.c -- tilde utility functions that are normally provided by	      bash when readline is linked as part of the shell. *//* Copyright (C) 1998-2009 Free Software Foundation, Inc.   This file is part of the GNU Tilde Library.   The GNU Tilde Library is free software: you can redistribute it and/or   modify it under the terms of the GNU General Public License as published   by the Free Software Foundation, either version 3 of the License, or   (at your option) any later version.   The GNU Tilde Library is distributed in the hope that it will be useful,   but WITHOUT ANY WARRANTY; without even the implied warranty of   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   GNU General Public License for more details.   You should have received a copy of the GNU General Public License   along with the GNU Tilde Library.  If not, see <http://www.gnu.org/licenses/>.*/#if defined (HAVE_CONFIG_H)#  include <config.h>#endif#if defined (HAVE_UNISTD_H)#  ifdef _MINIX#    include <sys/types.h>#  endif#  include <unistd.h>#endif /* HAVE_UNISTD_H */#if defined (HAVE_STDLIB_H)#  include <stdlib.h>#else#  include "ansi_stdlib.h"#endif /* HAVE_STDLIB_H */#if defined (HAVE_STRING_H)#  include <string.h>#else#  include <strings.h>#endif /* !HAVE_STRING_H */#include <pwd.h>#if !defined (HAVE_GETPW_DECLS)extern struct passwd *getpwuid ();#endif /* !HAVE_GETPW_DECLS */char *get_env_value (varname)     char *varname;{  return ((char *)getenv (varname));}char *get_home_dir (){  char *home_dir;  struct passwd *entry;  home_dir = (char *)NULL;  entry = getpwuid (getuid ());  if (entry)    home_dir = entry->pw_dir;  return (home_dir);}